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Finding the Fourth Proportional to 124,726.60, 187,089.90 and 40,486.60

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Solution

The fourth proportional to 124,726.60, 187,089.90 and 40,486.60 is: 60,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,726.60 : 187,089.90 = 40,486.60 : x
  2. Step 2: Convert to fraction form
    124,726.60/187,089.90 = 40,486.60/x
  3. Step 3: Cross multiply
    124,726.60x = 187,089.90 × 40,486.60
  4. Step 4: Simplify right side
    124,726.60x = 7,574,633,945.34
  5. Step 5: Solve for x
    x = 7,574,633,945.34/124,726.60
  6. Step 6: Final answer
    x = 60,729.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.